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Finding the Fourth Proportional to 299,145.60, 411,981.12 and 292,613.76

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Solution

The fourth proportional to 299,145.60, 411,981.12 and 292,613.76 is: 402,985.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,145.60 : 411,981.12 = 292,613.76 : x
  2. Step 2: Convert to fraction form
    299,145.60/411,981.12 = 292,613.76/x
  3. Step 3: Cross multiply
    299,145.60x = 411,981.12 × 292,613.76
  4. Step 4: Simplify right side
    299,145.60x = 120,551,344,572.21
  5. Step 5: Solve for x
    x = 120,551,344,572.21/299,145.60
  6. Step 6: Final answer
    x = 402,985.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.